DocumentCode
2053452
Title
Challenges to FDM-QAM coherent transmission with ultrahigh spectral efficiency
Author
Nakazawa, Masataka
Author_Institution
Research Institute of Electrical Communication, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai-shi 980-8577, Japan
fYear
2008
fDate
21-25 Sept. 2008
Firstpage
1
Lastpage
2
Abstract
I describe recent progress on 1 Gsymbol/s, FDM (Frequency Division Multiplexed)-QAM coherent transmission experiments by using heterodyne detection with a frequency-stabilized laser and an optical phase-locked loop technique. The spectral efficiency reached as high as 10 bit/s/Hz with polarization-multiplexed 128 QAM transmission.
Keywords
Bit error rate; Frequency division multiplexing; High speed optical techniques; Optical mixing; Optical modulation; Phase detection; Phase frequency detector; Phase shift keying; Quadrature amplitude modulation; Signal processing;
fLanguage
English
Publisher
ieee
Conference_Titel
Optical Communication, 2008. ECOC 2008. 34th European Conference on
Conference_Location
Brussels, Belgium
Print_ISBN
978-1-4244-2227-2
Electronic_ISBN
978-1-4244-2228-9
Type
conf
DOI
10.1109/ECOC.2008.4729190
Filename
4729190
Link To Document